CVE-2019-19816

moderate-risk
Published 2019-12-17

In the Linux kernel 5.0.21, mounting a crafted btrfs filesystem image and performing some operations can cause slab-out-of-bounds write access in __btrfs_map_block in fs/btrfs/volumes.c, because a value of 1 for the number of data stripes is mishandled.

Do I need to act?

~
1.2% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (15)

Aff A700S Firmware
Fas8300 Firmware
Fas8700 Firmware

Affected Vendors

Debian Linux Canonical Netapp

References (12)

Exploit https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816
Mailing List https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
Mailing List https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20200103-0001/
Third Party Advisory https://usn.ubuntu.com/4414-1/
Exploit https://github.com/bobfuzzer/CVE/tree/master/CVE-2019-19816
Mailing List https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
Mailing List https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html
Mailing List https://lists.debian.org/debian-lts-announce/2021/03/msg00010.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20200103-0001/
Third Party Advisory https://usn.ubuntu.com/4414-1/
45
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 3/34 · Minimal
Exposure 18/34 · Moderate